Don't update xsections if unnecessary.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/renderer.h b/src/renderer.h
index 0c38e6d..ce373df 100644
--- a/src/renderer.h
+++ b/src/renderer.h
@@ -49,12 +49,16 @@ typedef enum {
 typedef struct {
 	SDL_Texture *texture;
 	float aspect_ratio;
+
+	r_xsection_type last_type;
+	float last_frac;
+	int64_t frame_index;
 } r_xsection;
 
 void r_xsection_create(r_xsection *xsection);
 void r_xsection_destroy(r_xsection *xsection);
 int r_xsection_update(r_window *rw, r_xsection *xsection,
-                      phy_field_info *fi, float *field,
+                      phy_field_info *fi, float *field, int64_t frame_index,
                       r_xsection_type type, float frac);
 void r_xsection_draw(r_window *rw, r_xsection *xsection,
                      float x, float y, float w, float h);